Alexander, L.G..
Practice and progress : an integrated course for pre-intrmediate students /
Illustrations by Michael Ffolkes, Graham and Gus 
. - [Warszawa]  : [Polish Scientific Publishers],  1983 
. - 232 p. : tabl., ill.  24 cm. 
 - ((New Concept English ; Longman) )
<br/><label>  ISBN: </label>83-01-02442-9